Support.



A. MICHYELIN.

SUPPORT.

APPLICATION FILED JUNE :7. 1919.

SHEET I.

A. MI CHELIN.

SUPPORT. I APPLICATION FILED JUNE I7, 1919.

Patented Dec. 30, 1919.

2 SHEETS-SHEET 2.

ARTHUR IVIIGHELIN, OF MGNTREAL, QUEBEC, CANADA.

SUPPORT.

nsaasca.

Application filed June 17, 1919.

To all whom it may concern:

Be it known that l, ARTHUR MICHELIN, a subject of the King of Great Britain, residing at Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Supports; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to supports and more particularly to adjustable supporting legs for desks and chairs.

Desks and chairs used in school rooms are required to be adjusted to the desired height of the pupils and heretofore adjustable supporting legs have been used, but great trouble has been experienced with these support ing elements in consequence of their failure to retain the desk or seat in the desired elevated positions.

An object of the present invention is to provide adjustable supporting legs for school seats and desks, whereby the seats or desks will be securely retained in their adjusted position.

With the above and other objects in view which will hereinafter appear as the description continues, the invention consists of the novel features of construction, combination and formation of parts as will be hereinafter more fully described and particularly pointed out in the appended claim.

In the accompanying drawings has been shown a simple and preferred form of the invention, it being however, understood that no limitation is necessarily made to the precise structural details herein exhibited, but the right is hereby reserved to any changes, alterations or modifications to which recourse may be had that come within the scope of the claim without departing from the spirit of the invention or sacrificing the efficiency of th same.

In the accompanying drawings:

Figure 1 is a detail side elevation of one of the supporting legs when applied to a desk;

Fig. 2 is an enlarged detail side elevation of a desk embodying one of my improved supports;

Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 2;

Specification of Letters Patent.

Patented Dec. 3d, 1919..

Serial no. 304,964.

F ig, i is a vertical section on line of Fig. 2;

Fig. is a detail view of a portion of a supporting standard;

Fig. 6 is a detail view of a seat supporting leg;

7 is a horizontal section of same; and.

Fig. 8 is perspective view of a binding plug.

Referring now more particularly to the accompanying drawings wherein like and corresponding parts are designated by similar reference characters throughout the several views,

The numeral 1 indicates a. portion of an ordinary desk used in classrooms and which is to be adjustably supported upon the floor by means of a pair of legs one of which is being shown. These legs each com prise a base section 2 and an adjustable section 3. The section 3 is rigidly connected to the bottom of the desk and may be further braced by means of the brackets 4. The in nor face of the base section 2 is provided with a vertical groove 5, in which is adapted to rest the lower end of the section 3. This section 3 is provided with a vertical elongated slot (3 and having teeth 7 arranged in the opposite walls thereof, which teeth extend in the same direction forming substantially keystone shaped recesses. The up per closed end 8 of the section 2 is provided with a semi-circular lug 9 and an aperture 10 and this lug 9 extends through the slot 6 formed within the section 3 and is adapted to rest within one of the keystone shaped recesses formed within the section 3. A suitable plate 11 may be employed which rests upon the inner face of the section 3 and a bolt 12 extends through an opening in plate 11 and opening 10 of the section 2 and slot 6 of section 3, thereby retaining the said sections together and holding the lug 9 within one of the keystone recesses by means of a nut 12.

From the foregoing it is apparent that by this locking construction the sections 2 and 3 will be securely locked together and prevented from any sliding disengagement, whereby when the desk is moved to and locked in a desired position it will be securely retained in place.

The chair seats usually used in class rooms are provided with a base portion or pedestal 13 having a vertical extension 14: and the latter is formed with a groove 15 therein in which is adapted to slide the adjustable shank member 16, which is carried by the seat 17. This adjustable shank member 16 is provided with keystone shaped recesses 17 the same as the member 3 and the vertical extension 14: is provided with a recess 18 in which is seated the plate 19. This plate is formed with a lug 20 and an aperture 21 and said lug 20 is adapted to fit into one of the keystone recesses formed in the shank member 16. A bolt 21 similar to the bolt 12 may be inserted through the sections 13 and 16 and the plate 19 for holding the various members together, whereby the sections will be retained in their desired elevated positions.

Likewise a nut 22 may be tightened up on bolt 21 and serves to hold the aforesaid elements together.

It will be readily seen that the proper adjustments relative to the height desired may be had by removing the bolts and plates 11 or 19.

tion having a vertical elongated slot within the medial portion thereof, teeth formed within the opposite walls of said slot and extending inwardly and providing a plurality of substantially keystone shaped recesses, said lug adapted to rest within one of said recesses, a plate adapted for engagement with the inner face of the movable section and a bolt adapted to extend through the said plate, and sections for holding said lug within one of the recesses of the movable section.

In witness whereof I have hereunto set my hand.

ARTHUR MICHELIN. 

